Setup code for Clang types in SIL. #33541
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Rebased on top of master to unblock later PR. @swift-ci please smoke test |
slavapestov
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Aug 24, 2020
| DifferentiabilityKind diffKind) { | ||
| return ((unsigned)rep) | (isPseudogeneric ? PseudogenericMask : 0) | | ||
| (isNoEscape ? NoEscapeMask : 0) | | ||
| (((unsigned)diffKind << DifferentiabilityMaskOffset) & |
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Assert that diffKind fits inside DifferentiabilityMask?
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Hmm, should we do this consistently for all the fields? For example, representation takes two bits. I imagine we could have a Last = 3 case there (and a Last = 2 case for DifferentiabilityKind) and then have a static_assert(std::bit_width(DifferentiabilityKind::Last) == std::bit_width(DifferentiabilityMask)).
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(Leaving this open for discussion. Will fix this in a follow-up PR based on what you think about the question ^.)
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This translation is a pre-requisite to storing Clang types in SILFunctionType.
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We could've stored a function pointer or a block pointer or a function reference.
…ants. Invariants should be checked only when calling build(), not when the builder itself is created.
At all call-sites, the extInfo passed as the third argument is computed directly from the second argument, so we compute it directly in getBridgedFunctionType.
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Random failures on macOS and Linux. 😠 @swift-ci please clean test |
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While working on rebasing #33085, I realized that the changes are just too much for one PR. So this is a separate PR breaking out the first two commits + some cleanup.